Abstract
Roof bolt reinforcement of stratified carboniferous and fragile strata is a popular way of roof support in underground mines. The manifestation of strain energy of strata generated during coal winning generates convergence on established highways, the magnitude of which is exclusively determined by the strength, manner of beam construction, and time. A pattern of roof support is altered from grouting with cement bolting to resin bolting with a modification in Universal Drilling Machine (UDM), resulting in greater grip factor capacity and roof conditions compared to cement capsule grouting. This study sheds light on the modification of UDM for resin bolting provided by strata control and monitoring plan, and the reliability of roof support is demonstrated by detailed validation using modified Mohr–Coulomb theory and mechanical model method using Euler–Bernoulli theory. It has been seen in practice that the convergence in the stratified roof can be minimised and avoided with resin bolting, which is obtained from the theoretical method that maximal stress develops in the stable zone of the failure envelope. The thickness of a simply supported consolidated beam is shown in the mathematical model to be the foundation for the coal roof convergence rate, and this has been proven in the computational technique. The instantaneous roof 3D model was created to investigate the impacts of beam building thickness in Creo Simulate-6.0.4, as well as deflection analysis in Ansys 16.0 using a 3D model created by Creo Parametric-6.0.4 and practical monitoring of in situ convergence. These methods demonstrate how resin bolting improves the immediate roof’s stability and prevents roof collapse during the mining process.
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Siddiqui, M.A.H., Akhtar, S., Chattopadhyaya, S. et al. Investigation of geo-mining green roof seismic energy balancing with resin bolting by Universal Drilling Machine: a novel energy-absorbing-based support system. Arab J Geosci 15, 431 (2022). https://doi.org/10.1007/s12517-022-09594-2
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DOI: https://doi.org/10.1007/s12517-022-09594-2